Updating java cache
An increasing volume of critical data presents new challenges when developing performing applications with Java.Caching may address these challenges if applied right.
A typical interface for a Java cache provides access to the data using a unique key: A cache works as the following: An application requests data from cache using a key.
Increasing cache size for the data that satisfies this requirement increases hit/miss ratio.
The data from the example in the beginning of the article satisfies the requirement of temporal and spatial locality .
Users log into the system around the same time and the number of items from the reports that are accessed in rapid succession is small.
Data that does not satisfy the requirement of temporal and spatial locality of access leads to faster eviction of cache elements and as a result will lower the number of cache hits and increase cache maintenance.
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To execute each query and to fetch results over the network takes 100 milliseconds on average.